Chapter 1 Vocab

Question 1

bias

Answer 1

Occurs when what the scientist expects changes how the results are viewed.

Question 2

constant

Answer 2

A factor that does not change when other variables change.

Question 3

control

Answer 3

The standard by which the test results are compared.

Question 4

density

Answer 4

The mass per unit volume of a material.

Question 5

dependent variable

Answer 5

Its value changes according to the changes in the other variables

Question 6

experiment

Answer 6

Tests the effect of one thing on another using controlled conditions.

Question 7

graph

Answer 7

A visual display of information or data.

Question 8

hypothesis

Answer 8

A possible explanation for a problem using what you know and what you observe.

Question 9

independent variable

Answer 9

The variable you change to see how it will affect the dependent variable.

Question 10

mass

Answer 10

A measurement of the quantity of matter in an object.

Question 11

model

Answer 11

Represents and idea, event, or object to help people better understand it.

Question 12

scientific law

Answer 12

A statement about what happens in nature and that seems to be true all the time.

Question 13

SI

Answer 13

The International System of Units. It is universally accepted and understood by scientists throughout the world.

Question 14

standard

Answer 14

An exact quantity that people agree to use to compare measurements.

Question 15

technology

Answer 15

The application of science to help people.

Question 16

theory

Answer 16

An explanation of things or events based on knowledge gained from many observations and investigations.

Question 17

variable

Answer 17

A quantity that can have more than a single value.

Question 18

volume

Answer 18

The amount of space occupied by an object.

Question 19

scientific method

Answer 19

An organized set of investigation procedures.